The Base64 Alphabet and Padding Explained (=, +, /)
Which characters are valid Base64, which are illegal, why a block can be illegible, why it can start with /, and how the = padding works, with an example.
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All articles about encoding: 4 practical guides and tutorials from our free, privacy-first online tools.
Is Base64 Secure? Encoding vs Encryption Explained
Is Base64 secure? No — Base64 is an encoding, not encryption. Learn how encoding vs encryption vs hashing differ and how to actually protect data.
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URL-Safe Base64 vs Standard Base64: Key Differences
Standard Base64 uses +, / and = that break URLs, JWTs and filenames. Learn the url safe base64 vs standard base64 difference and how to fix decode errors.
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Understanding Base64 Encoding: How It Works and Why
Learn how Base64 encoding works, why it exists, its URL-safe and MIME variants, common use cases, size overhead, and common security misconceptions.
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